# Questions Asked onSeptember 6, 2015

1. ## Pre-Calculus HELP!

change the polar equation r=5/1+cos(theta) to rectangular form. How do I do this? Thank you! :)

2. ## Algebra

Your friend claims that she has a bag of 30 coins containing nickels, dimes, and quarters. The total value of the 30 coins is \$3. There are twice as many nickels as there are dimes. Is your friend correct? Explain your reasoning

3. ## maths

if it takes 10 men 6 months to build a house, how long will it take one man?

4. ## Physics

An unmarked police car traveling a constant 90 km/h is passed by a speeder traveling 128 km/h. Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.80 m/s2 , how much time passes

5. ## Physics

Instructions for finding a buried treasure includethe following: Go 736.4 paces at 130◦, turn to 199◦and walk 134 paces, then travel 157 paces at 195◦. Find the magnitude of the resultant displacement from the starting point. Answer in units of

6. ## math

A pharmacy claims that the average medication costs \$32 but it could differ as much as \$8. Write and solve an absolute value inequality to determine the range of medication costs at this pharmacy. |x − 32| ¡Ý 8; The medication costs range from \$24 to

7. ## algebra

Solve for n: 21k – 3n + 9p > 3p + 12. n > 2p + 7k – 4 n < 2p + 7k – 4 n > –4p – 7k + 4 n < –4p – 7k + 4

8. ## Matg

Juanita told her dad that she won 80% of the card games she played yesterday. If she won 4 games, how many games did she play?

9. ## Chemistry

What is the difference between a chemical change and a chemical reaction?? My answer: A chemical change leads to a solidifed chemical reaction but more or less they are the same thing because it's a change in which one or more pure substances are converted

10. ## financial literary

Floyd employer purchase a health insurance plan that cost 825 per month Floyd page 105 toward the plan each month what is the annual value of the employer's contribution?

11. ## physics

A photographer in a helicopter ascending vertically at a constant rate of 1.2m/s accidentally drops a camera out of the window when the helicopter is 46m above the ground. How long will it take the camera to reach the ground

12. ## Chem1412

The melting point of benzene (C6H6) is 5.5 oC and the heat of fusion at that temperature is 9.87 kJ/mol. How much heat would be required to melt 35.0 g of benzene at 5.5 oC? Atomic weights: C 12.011 H 1.00794

13. ## Math and exopents

Given w = 10. w + w (12 - 2*2 * 3) * 7? Can some one help? the answers are: 73 12 6 3 but none of my calculations are 73, 12, 6 or 3 :(

14. ## stats 200

. At a college, 72% of courses have final exams and 46% of courses require research papers. Suppose that 32% of courses have a research paper and a final exam. Let F be the event that a course has a final exam. Let R be the event that a course requires a

15. ## chemistry

What assumption did you make about the reaction of KMnO4 solution in those determinations where temp didn't change to allow k to be a constant?

16. ## Algebra

marie730 the temperature at the end of the day was 64 degrees. the temperature has increased twice during the day,once by 8 degrees and another time by 4 degrees which expression shows what the temperature was at the start of the day 64-8-4 64+8-4******

17. ## physics for Science

2) You take the following measurements for the distance a toy car travels in 10 seconds during each 5 trials: 157cm, 175cm, 162cm, 168cm, 187cm. What are the relative uncertainties of the distance and time measurements? Which measurement is the most

18. ## Interpersonal communication

Dale, a minister, and his wife Jan had plans for a “date night.” An emergency arose with a congregational member. Dale calls Jan saying, “I know how much we were both looking forward to our time alone tonight. I just heard from Jose that is wife is

19. ## Physics

A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 26.6 m/s. At the same time, it has a horizontal velocity of 55.9 m/s. At what speed does the vehicle move along its descent path? Answer in units of m/s. At

20. ## Maths

Prove: (1+tan21)(1+tan28)(1+tan24)(1+tan17)=4

21. ## algebra

Solve the inequality W > Y plus H all divided by P for H. W divided by P – Y > H W times P divided by Y > H WP – Y > H W + P – Y > H

22. ## Biology

1) Large/tough seeds act as a selection pressure on what trait? a. Large bills b.Large feathers c.Dark feathers d.Long tails 2) What causes the change in bill depth between 1976 and 1978? a.The lack of rain b.The persistence of only larger seeds

23. ## Algebra

What must be added to x^2 + 10x +23 to make it a perfect square?

24. ## phyics

When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.2 m above the ground and its path initially made a 39 ∘ angle with the

25. ## Macroeconomics

Suppose there is a temporary but significant increase in oil prices in an economy with an upward-sloping Short-Run Aggregate Supply (SRAS) curve. If policymakers wish to prevent the equilibrium price level from changing in response to the oil price

26. ## Gen edu 499 quiz critical thinki

The very large increase in allergies over the last thirty years is due to the great success of immunizations administered over this time period. Since immunizations have nearly eliminated life-threatening diseases such as polio, the human immune system

27. ## physics

When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.2 m above the ground and its path initially made a 39 ∘ angle with the

28. ## math(elmntry euclidean geometry)

The sum of the angles of a quadrilateral is 360°. Find the conditional, draw a diagram, and state the given and conclusion. CONDITIONAL FORM: If it is the sum of the angles of a quadrilateral, then it measures 360°. DIAGRAM: Not shown, but pictures a

29. ## Math

What must be added to x^2 + 10x +23 to make it a perfect square?

30. ## Chemistry

A 78.9g sample of HCN contains 0.290g of H and 4.06g of N. Find the mass of carbon in a sample of HCN with a mass of 3.37 g

31. ## Statistics (Percentile, Decile, Quartile)

Please refer to the following table: Number of Cellular Phones in Household: DECILE 1 - 1.00 2 - 1.00 3 - 1.00 4 - 1.00 5 - 2.00 6 - 2.00 7 - 3.00 8 - 3.00 9 - 4.00 (a) How many cellular phones does a household have at the 42nd percentile? (b) How many

32. ## physcial science

a student drops an object out of the window of the top floor of a high rise dormitory, how fast is the object traveling when it strikes the ground at the end of 3.4s

33. ## physics

Estimate the speed in mph with which water comes out of a garden hose using your past observations of water coming out of garden hoses and your knowledge of projectile motion. (Take the inclination angle to be 45°, the initial height to be 1.0 m, and the

34. ## general education 499 wk 4 quiz

people have claimed that Jamie's paintings have given them the blues. Clearly this cannot be entirely correct. Since many of James paintings contain no blue at all.

35. ## Algebra

Express 81p^2 - 49q^2 as products of two terms.

36. ## MATH

Andrea wants to deposit money into a bank account that earns 2.5% simple interest. Use the formula to find the amount of money that she should deposit so that she earns \$2500 after 4.5 years. Show and explain your work.

37. ## microsoft 2013

19. Which of the following identifies the patterns used for each data series in a chart? A. Data point B. Data series C. The horizontal and vertical axes D. Legend

38. ## Math

If 2ab + 5cd = 5 and abcd = 1, what is the value of 4a^2b^2+ 25 c^2d^2

39. ## Microeconomics

Assume that you are considering a 7-night vacation to Fort Walton Beach, Florida, in March. You estimate the total cost of the trip to Fort Walton Beach at \$1,250, including discounted airfare. However, a resort at Myrtle Beach, South Carolina, is offering

40. ## Microsoft word 201

9. Andrea needs to format the legend on her chart. She clicks on the chart to select it. Which of the following options appears only when a chart is selected? A. Insert B. Review C. Chart Tools D. Page Layout

41. ## micosoft 2013

20. Which of the following processes should Angel use to merge cells A1:D4 to create a title? A. Highlight cells A1:D4, click on the Home tab, and click on the Wrap text icon in the Alignment group. B. Highlight cells A1:D4, right-click and select Format

42. ## chemistry

It took 20 seconds for a certain volume of oxygen to effuse through an orifice(small opening) at 298K. How long will it take the same volume of each of the following gases to effuse through the same orifice at the same temperature?. The gases are hydrogen,

43. ## algebra

Thabos brother is 5 years younger than him.Their combined age is half their sisters age.Their sister is 12 years.How old is Thabo?

44. ## Physics

A radar station locates a sinking ship at range 16.0 km and bearing 136° clockwise from north. From the same station, a rescue plane is at horizontal range 19.6 km, 155° clockwise from north, with elevation 2.35 km.

45. ## Math

Name the 2-digit number: -The ones digit is three times the tens digit. -Both digits are even.

46. ## Physics

A point charge of 4 μC is placed at the origin. There is an external uniform field E = 400 i N/C. What is the net force on a 5 μC charge placed at (5 m, 3 m) ??? i + ??? j N

47. ## Chem

A carless chemistry student pours 200 grams of methanol, a flammable substance into the sink. Another careless chemistry student causes the bad situation to get even worse by dropping a lit match into the sink. The metanol burns completely with 300 grams

48. ## life science

investigation to determine whether expired air contains carbondioxide

49. ## Chemistry

when heated, sulfuric acid will decompose into sulfur trioxide and water. Write a chemical equation, using words, to represent this chemical reaction. Identify reactants and products. (I'm having trouble identifying the reactants and products & writing the

50. ## science

a rocket is launched vertically at a height of 4km above the earths surface calculate the maximum height above the ground level

51. ## Algebra

If 2ab + 5cd = 5 and abcd = 1, what is the value of 4a^2b^2+ 25 c^2d^2

52. ## organic chemistry

Which has higher boiling point? A. Alkenes B. Alkadienes I think my answer would be A because it contains 1 double bond (1 pi bond)

53. ## Math

Express 81p^2 - 49q^2 as products of two terms.

54. ## Islamis study

What is the significance of month of zill - hajj

55. ## English

I have to write about an artifact. Could a place be an artifact? Say I went someone and really enjoyed it for a certain reason (Ex: Going to a museum that I really liked.). Could I write about that? or is it not an artifact

56. ## Chemistry

For the combustion of 100. gm of methane, how much heat would be generated?

57. ## Thermochemistry

For the combustion of 100. gm of methane, how much heat would be generated?

58. ## Science

If one third of 100 g of 27% aqueous sugar solution is taken in a beaker and 10 g of sugar is added to it, the concentration of the resulting solution will be

59. ## math

the elevation of a tower from a point on the ground is 30 at a point on the horizontal line passing through the foot of the tower and 100 metres nearer it, the angle of elevation is 60 find height of the tower and the distance of the first point from the

60. ## physics

Estimate the speed in mph with which water comes out of a garden hose using your past observations of water coming out of garden hoses and your knowledge of projectile motion. (Take the inclination angle to be 45°, the initial height to be 1.0 m, and the

61. ## microsoft 2013

10. David has a small business and is working on an Excel worksheet to help manage his inventory. David realizes cell E14 has the wrong output. To check the problem, David should first select cell E14 and look at the _______ to check the formula. A. range

62. ## Statistics

In country A, the Index of Qualitative Variation (IQV)for an exhuastive survey of religious beliefs is 0.25. For country B, the IQV is 0.75. What can you infer about the different dispersion of religions between the two countries?

63. ## sita college

It took 20 seconds for a certain volume of oxygen to effuse through an orifice(small opening) at 298K. How long will it take the same volume of each of the following gases to effuse through the same orifice at the same temperature?. The gases are hydrogen,

64. ## Math

PLEASE HELP What is 6x3 / 9 - 1? I got 6 x 3 = 18 / 9 - 1 = 1 But for the answers it only 2 3 5 6 no 1 :((

65. ## Algebra

Find the values of a^2 + b^2 and a^4 + b^4 when a + b =5 and Ab = 4

66. ## Math

The distance between two numbers on the number line is 15. If one of the numbers is 5, what are the two possibilities for the other number?

67. ## Physics

Can you help me understand the graphic relationship between d vs t, v vs t, and a vs t?

68. ## history

In your opinion, what would have happened had the Founding Fathers chosen to simply modify the Articles of Confederation?

69. ## al

radical 72 x^9 simplify show all work

70. ## chemistry

a block of metal has a width of 3.2cm, a length of 17.1cm, and a height of 3.7cm. its mass is 1.3kg. calculate the density

71. ## English

1. Time is up. 2. Time is over. 3. Time is finished. 4. Time is off. =============== At the end of a talk show, what can an MC say?

72. ## Calculus using the first derivative

Y=e^x differentiate using the first principle

73. ## math

A man facing north turns to face south-west .Through how many degree did he turn if a. he turned clockwise b. he turned anti-clockwise

74. ## physics

An object traveling 339 m/s strikes a 2nd object and comes to rest 24 cm inside of the 2nd object (which does not move). What is the 1st object's average deceleration (m/s/s)?

75. ## Algebra

If m1 and m2 are the slopes of two lines, where m1 . m2 =-1, the lines are? the same, or parallel or perpendicular?

76. ## Physics

if there was a cyclone, would the speed of the wind make the waves go faster and make constructive interference occur?

77. ## govt high shool

AlgebraWhat is compliment of 72degree 40 min

78. ## Operating System

How would you rank the principle of concurrency? Explain the design issues for which the concept of concurrency is relevant.

79. ## Caculus

Find the limit of f(x)=1/(x-1) as approaches 1 think inifnite limit

80. ## Math

Find the values of a^2 + b^2 and a^4 + b^4 when a + b =5 and Ab = 4

81. ## Geography

"As stormwater travels faster in creeks, it would enter the ocean at a faster rate, therefore, having the potential to strip away sand and erode the shoreline" Is this correct?

82. ## Islamic study

how is the islamic calendar different from the one we use